3.3 The political risk covered according to Cl. 2-9 sub-clause 1 letter b
596/2026

3.3 The political risk covered according to Cl. 2-9 sub-clause 1 letter b

3.3.1 Introduction

NP Cl. 2-9 Perils covered by an insurance against war perils sub clause 1 letter b states that an insurance against war perils covers:

capture at sea, confiscation, expropriation and other similar interventions by a foreign State power, provided any such intervention is made for the furtherance of an overriding national or supranational political objective. Foreign State power is understood to mean any State power other than own State power as defined in Cl. 2-8 (b), second sentence, as well as organisations and individuals exercising supranational authority or who unlawfully purport to exercise public or supranational authority,

The heading of the provision is “perils” insured against. As mentioned above in 3.2, Nordic marine insurance makes a distinction between the peril that is insured and the insured event, which must be caused by the peril. The peril in letter b is defined as two elements combined with causation: it must be a foreign state intervention, and this must be “for the furtherance of” or caused by the state’s overriding political objective. It thus appears that the foreign state intervention is the casualty, that the overriding political objective is the peril, and that these elements are tied together through a requirement of causation.(1) Trine-Lise Wilhelmsen, “Marine insurance cover for detainment of vessels by a foreign state – the Team Tango case”, The Modern Law of Marine Insurance Vol 5, 2022, edited by Rhidian Thomas, Informa Law from Routledge, 2022, ch. 9, para 9.57-9.59.

In the following, the insured event is discussed in 3.3.2 and the peril – for the furtherance of an overriding political objective in 3.3.3. The issue of causation is discussed in 3.3.4.

3.3.2 The interventions

The intervention “capture at sea” means, according to the Commentary, that:(2) Commentary 2023 p. 57.

“the vessel is intercepted, seized or arrested by a foreign State power at sea. This covers the situation where the insured vessel is stopped at sea by a war vessel or military vessel using power or threatening to do so. It is not capture “at sea” if the vessel is arrested and detained in port without a foregoing capture. On the other hand, when the vessel is captured at sea, it will normally be escorted by power into port for further control. As long as the detainment in port is due to the same cause as the capture, the stay in port must be regarded as part of the capture. If the vessel sails into port without any threats from the foreign State, this is outside the concept of “capture at sea”. This is true even if the State could have forced the vessel to enter the port.”

It appears from these remarks that “capture” is an intervention made by a “state power”. In that case, it is not capture if the vessel is seized by terrorists, military groups or pirates. However, NP Cl. 15-11 sub-clause 2 provides cover when the vessel “has been captured by pirates”. This is confusing, as the Norwegian word for “capture” in NP Cl. 2-9 sub-clause 1, letter b is “oppbringelse”, which means

beslagleggelse av et fiendtlig skip, eller et nøytralt skip som har krenket nøytralitetsreglene, under krig. Oppbringelse pleier å starte med visitasjon og blir endelig avgjort av en priserett.”

From the way this concept was used in the earlier versions of the Norwegian Plan, it was clear that it had this rather narrow meaning.(3) Trine-Lise Wilhelmsen, “Wars and laws. How war has influenced the development of the law of marine insurance – the Norwegian/Nordic perspective”, Marius no 583 (2024), (Simply 2023) pp. 63-86 at pp. 74-75. However, it was theoretically argued that the concept of “oppringelse” also referred to capture by the state in cases of breaches of, for instance, fishery regulation.(4) Sjur Brækhus and Alex Rein, Håndbok i kaskoforsikring, 1993, p. 69. As this created some confusion, the requirement for an overriding political motive in the 2019 revision was also tied to “capture”. When the expression “capture” is also used in regard to pirates, it is obvious that such qualification was needed.

The concept “expropriation” means, according to the Commentary, that “the State takes over the vessel for a purpose deemed to be in the public interest”. The Plan Committee found that expropriation is more similar to confiscation than it is to requisition. Both expropriation and confiscation mean a permanent loss of ownership, whereas requisition is typically only for a limited period in time and can also be limited to use, not ownership transfer. It was therefore agreed that expropriation by a foreign state should be covered on a similar basis to confiscation. However, whereas confiscation does not generate compensation, when the vessel is expropriated, the assured may be compensated for his loss. It follows from general insurance principles and is also stated in the Commentary that any “such compensation must be deducted from the liability of the insurer”.(5) Commentary 2023 p. 57 to Cl. 2-9 sub-clause 1 letter b.

The term “other similar interventions” is, according to the Commentary, meant to have:(6) Commentary 2023 p. 58 to Cl. 2-9 sub-clause 1 letter b.

“similar consequences for the assured as “capture at sea” and “confiscation”. Typical for these interventions is that the ship-owner is being divested of the right of disposal of the ship. This is therefore a necessary condition for an intervention to be covered under this group. An intervention that satisfies this criteria can of course take place while the vessel is in port.”

3.3.3 The overriding political objective

The intervention must, according to Cl. 2-9 sub-clause 1 letter b, be made “for the furtherance of an overriding national or supranational political objective”. The expression “overriding national... political objective” is, according to the Commentary, based on four arbitration cases concerning war risk cover for interventions by foreign state powers under NMIP 1964 and NP 2013, Version 2016.(7) Unpublished award of 11 June 1985 relating to the Germa Lionel, ND 1988 p. 275 NA Chemical Ruby, The Wildrake case, which was settled, and ND 2016 p. 251 NA MT Sira, cf. Commentary 2023 p. 58 The Commentary states that:

“The three first cases are summarized in the Sira-case, which states that interventions for the “furtherance of overriding political goals” are interventions that are typical for war or times of international crisis, and often can be explained by foreign policy considerations. The justification for the intervention may be a warranted or unwarranted suspicion that the vessel has breached rules for the protection of the security of the State. It is not decisive that the general political situation in the State has contributed to the intervention. It follows from this that abuse of power is neither a necessary nor a sufficient condition for war risks cover. If an overriding national political goal is detected, there is no need to establish misuse of power. On the other hand, misuse of power need not be explained by such overriding political motives. Misuse of power may be a reflection of a dysfunctional State and indicate another motive, but misuse of power is not in itself a necessary condition for cover.”

According to the Commentary the purpose is to delimit the cover in relation to both ordinary administrative procedures and the misuse of power or corruption by the administration:(8) Commentary 2023 p. 58 to Cl. 2-9 sub-clause 1 letter b.

“It is therefore clear that interventions in accordance with applicable law for the purpose of enforcing customs-, police-, safety- or navigation-regulations or any private law rights against the insured vessel are outside the scope of the war insurance cover. If the ship is arrested/captured at sea by the Coast Guard or representations of the police or customs authorities to hinder or investigate illegal fishery, import or export or breach of trade regulations, this will not be covered. The same is true if the ship is arrested or detained in port because of doubt as to whether the ship is compliant with the rules regarding technical and operational safety, or because the crew is suspected of smuggling. Obviously, losses arising from the ship being detained or seized as part of debt-recovery proceedings against the owners are not covered, either; this follows in any event from the exclusion in sub-clause 2 (a).

It does not matter whether such police or customs intervention is caused by illegal acts performed by a third party, for instance the charterer or the master or crew. Further, it is not decisive whether the State intervention is based on the legislation of the country or may be seen as abuse of power or corruption, if the intervention does not have an overriding national or supranational political objective. However, if an overriding national or supranational political objective is detected, it does not matter if the State power formally justifies the interventions with for instance police or customs regulations, or if the intervention has the character of abuse of power or corruption.”

Whereas the expression “overriding … political objective” is based on the four arbitration cases mentioned, the word “national” is added to emphasize that a public state is involved.(9) Commentary 2023 p. 58 to Cl. 2-9 sub-clause 1 letter b.

A natural interpretation of the Commentary is that abuse of power is neither a necessary, nor a sufficient, condition for war risk cover. If an overriding national political objective is detected, there is no need to establish misuse of power. On the other hand, misuse of power need not be explained by such overriding political motives. Misuse of power may be a reflection of a dysfunctional state and may indicate another motive, but misuse of power is not in itself a necessary condition for cover.

The overriding political objective requirement is further discussed in the Heroic Idun case.

The vessel Heroic Idun was insured by DNK for the period 21 July 2022 to 31 December 2022 on the Nordic Marine Insurance Plan of 2013, Version 2019. On 8 August 2022, Heroic Idun was drifting close to the AKPO offshore oil terminal, located approximately 10 nautical miles within Nigeria’s Exclusive Economic Zone and about 200 kilometres from Port Harcourt. The vessel was under instructions from her charterers to load a cargo of crude oil at the AKPO Terminal. The area was designated as being high-risk for piracy. That evening, Heroic Idun was approached by the Nigerian Navy vessel NNS Gongola, which expressed concerns regarding the absence of the necessary clearances for loading at the terminal and ordered the vessel to proceed to Bonny Fairway Buoy, located approximately 64.5 nautical miles from the AKPO Terminal and serving as a key operational base for the Nigerian Navy.

The assured argued that the Master and the crew were unable to identify NNS Gongola as a naval vessel and, therefore, perceived the approach by the unidentified vessel as a potential piracy attack. Due to this misunderstanding the Master did not comply with the order to proceed to Bonny Fairway Buoy, but decided instead to sail Heroic Idun away from the potential threat and out of Nigerian waters. The insurer, on the other hand, argued that the Master and crew did indeed recognize the vessel to be a naval vessel and, in any event, that the absence of adequate steps being taken by the Technical Manager to identify the approaching vessel as a naval vessel amounted to gross negligence under the insurance contract.

After Heroic Idun had sailed away from NNS Gongola, she was drifting in international waters between 9 and 12 August 2022 outside of the Nigerian EEZ while assessing the situation and exploring the options to proceed. However, on 12 August 2022, at the request of the Nigerian authorities, Heroic Idun was arrested in the EEZ of São Tomé and Príncipe by the Equatorial Guinean Navy vessel Capitan David. The arrest was effected on the basis of alleged violations said to have been committed by the vessel in Nigerian waters and that the vessel had evaded NNS Gongola. The vessel and its crew were subsequently detained in Equatorial Guinea for a period of approximately three months. In addition, the claimant was required to pay a fine of approximately EUR 2,000,000 in respect of alleged breaches of Equatorial Guinean law.

On 11 November 2022, again at the request of the Nigerian authorities, Heroic Idun and its crew were escorted and transferred from Equatorial Guinea to Nigeria.

Upon arrival, both the vessel and its crew were formally charged with respect to the events that occurred outside the AKPO Terminal on 8 August 2022. They remained in detention in Nigeria for a further period of more than six months.

The Heroic Idun was released on 27 May 2023, following a plea agreement between the assured and the Nigerian State. Under the agreement, the assured agreed to pay restitution in the amount of USD 15 million and to publish a formal apology, expressing its sincere regret for the difficulties caused to the Nigerian Navy and any embarrassment arising from the vessel’s evasion of the Nigerian navy on 8 August 2022.

The assured’s primary claim was for USD 180,000,000 plus interest, based on the contention that Heroic Idun was “captured at sea” by a “foreign State power”, cf. NP. Cl. 2-9 sub-clause 1 letter b and not released “within six months from the day the intervention took place”, cf. NP Cl. 15-11.

The main contested issue in relation to the primary claim was whether the detention of Heroic Idun by Equatorial Guinea, and/or the subsequent detention by Nigeria, qualified as interventions “made for the furtherance of an overriding national or supranational political objective” within the meaning of Clause 2-9 sub-clause 1 letter b. The insurer argued that none of the interventions were undertaken in furtherance of such an objective, but rather for the purposes of ordinary law enforcement, which falls outside the scope of cover under the war risk insurance.

The Tribunal pointed out that the chain of events that began on 8 August 2022 with the Nigerian Navy’s request for a seemingly routine inspection of Heroic Idun would generally qualify as an instance of law enforcement and not a war risk. “However, on a panoramic view of the facts, there are features of this case which stands out and could distinguish it from a matter of ordinary law enforcement that is not covered by the war insurance” (para 1220). The Tribunal found it unlikely that the sequence of events that happened would have occurred without decisions and coordinated actions by governmental or other overarching authorities of Equatorial Guinea and Nigeria. It was “also apparent that the cooperation between the two States in relation to the arrest and detainment of the Heroic Idun formed part of a broader policy aimed at combatting piracy and maritime crime in the region. Moreover, the Heroic Idun’s evasion from the Nigerian Navy on 8 August 2022 seems to have caused embarrassment to the Navy and to have been perceived as reflecting negatively on its progress and deterrent capacity in combating piracy and maritime crime” (para 1223).

Given “the governmental functions, policy issues, and concerns involved, the intervention against the vessel might be said to have had a “political dimension”, in the conventional understanding of that term. The pivotal question for the Tribunal is whether this “political dimension” meant that the interventions were “made for the furtherance of an overriding national or supranational political objective” in the meaning of Clause 2-9 sub-clause 1 letter b and thereby was covered by the war risk insurance” (para 1224).

The Tribunal analyzed the expression “overriding … political objective” as used in the four arbitration cases and the Commentary and stated:

“that although interventions by lower-level state authorities may be political in a broad sense – for example, if taken to influence the policy decisions of the president or government, to strengthen the authority's position in relation to rival institutions, or to affect decisions on funding – such interventions are not covered by war risk insurance unless they are carried out in furtherance of an overriding political objective established at a higher level of the state hierarchy. In the Sira case, the sole arbitrator observed that an intervention by a lower-level body, such as detaining vessels in an attempt to win the favour of political candidates ahead of a presidential election or to “make a mark” in relation to other government entities at the same level, could not in itself be regarded as an act taken in furtherance of overriding political objectives”.(10) Para 1245, referring to Sira, last page.

The Tribunal further observed that “political objective” in this context had a rather narrow meaning; “Interventions for any political objective in general will not qualify for cover. The relevant political objectives are qualified by the characterization “typical for war or times of international crisis and can often be explained by foreign policy considerations” and negatively by the exclusion for law enforcement and regulations. Hence, the term “overriding political objective” must be read in conjunction with these qualifications” (para 1247).

The Tribunal pointed out that although the Commentary used the expression “typical for war or times of international crises and often can be explained by foreign policy considerations”, this expression was not discussed further (para 1249). The expression could not be similar in meaning to war or war-like conditions, as this was covered in letter a (para 1250). The qualification originated from the Chemical Ruby case, where the sole arbitrator suggested that a politically motivated detention during peacetime may also be covered, giving the following two examples of such cases:

  1. A detention forming part of a boycott or retaliatory action against the vessel’s flag state, or the state from which the cargo originates or to which it is destined, where the specific circumstances of the vessel play a lesser role;

  2. A politically motivated detention based on an unfounded suspicion that the insured vessel has violated regulations aimed at protecting the security of the state in question, or on a suspicion that persons on board have engaged in espionage, or assisted saboteurs, insurgents, or similar actors (para 1251).

The Tribunal also observed that whereas the Commentary used the term “international” crises, this was not reflected in the wording of the arbitration cases and that one had to include “national crisis” to give meaning to the context (para 1254).

The Tribunal concluded that the difficulty of analyzing the individual components of the expression “interventions for the furtherance of overriding political goals typical for war or times of international crisis” in isolation “strongly suggests that the phrase should be understood as a whole in the context in which it was used in the Chemical Ruby case, namely as a flexible requirement encompassing key situations covered by war risk insurance, by contrast to Law Enforcement” (para 1256). As a result, the Tribunal found it necessary to carry out an overall assessment of the circumstances, guided by those general characteristics of covered situations and contrasting them with the types of “Law “Enforcement” measures that are excluded from cover under the provision (para 1257).

The Tribunal referred to the remarks in the Commentary on the delimitation of overriding political goals with regard to the “Law Enforcement” referred to above (para 1258) and remarked that the reasoning and the examples “have a strong bearing on the understanding of what is not to be considered “overriding political objectives” in Clause 2-9, sub-clause 1(b). Thus, even though law enforcement, by way of interventions against vessels in principle, could have been considered to promote overriding political objectives in a broader and conventional understanding of that expression, such as political objectives relating to national security, public health, and the regulation of trade and commerce, it is not covered by Clause 2-9, sub-clause 1(b). The latter illustrates that it may be “easier to determine what is not covered by Clause 2-9, sub-clause 1(b) than setting out what is covered” (para 1259).

The Tribunal emphasized that the Commentary on law enforcement did not mention measures taken to combat piracy. The Tribunal however agreed with the Sira case that such measures must be considered to fall within the scope of police regulation “in its pure form” (Sira case, p. 265) (para 1260).

The Tribunal further pointed out circumstances that would not be sufficient to qualify as “overriding … political objectives”:

  1. Misuse of power. An intervention that significantly exceeds what was necessary or common for the relevant kind of law enforcement, may indicate that it was motivated by “an overriding political motive”,(11) Para 1261 with reference to the Germa Lionell case as referred in Wilhelmsen and Bull, p. 97, and Brækhus and Rein, p. 74. but that is not sufficient. The assessment of “misuse of power” was not to be made using an objective norm but should be based on what could be expected in the relevant legal system (para 1262).

  2. The involvement of the president or government (1263). “In legal systems that do not adhere to the same separation of powers between the executive and the judicial branch as in, for example, the Nordic countries, it may not be unusual for the government to be involved in important matters or for certain decisions that would in other countries typically be made by the courts. However, as with misuse of power, the fact that decisions relating to an intervention justified as law enforcement are made by the president or any other overarching body may, if supported by other circumstances, indicate that the true motive behind the intervention is to further an overriding political objective” (para1264).

The Tribunal also discussed the problems relating to proving the objectives of the intervention taken (para 1272). A major problem in this regard was that neither the insurer nor the assured normally had first-hand access to evidence showing whether or not an intervention made by authorities in a state, often a foreign state, was motivated by “overriding political objectives”, and that it would be hard to obtain access to such evidence. The relevant state would often not be willing to provide access to such evidence, which might be politically or diplomatically sensitive. Furthermore, the relevant state might have an evident interest in not shedding light on such a case; for example, where its authorities have not complied with the rule of law (para 1273).

Based on the legal sources, the Tribunal put forward the following guidelines to establish whether the intervention was motivated by overriding political objectives:

  1. The general domestic and foreign political situation may explain the detention, with the specific circumstances of the individual vessel playing a lesser role. The intervention is generally politically motivated if the intervention against the vessel is merely instrumental in achieving a broader political objective; for example, where the detention forms part of a boycott or retaliatory action against the vessel’s flag state, or against the state from which the cargo originates;

  2. The intervention is caused by an unfounded suspicion that the vessel has violated regulations intended to protect the security of the state in question, or has otherwise threatened the state’s security interests; for instance, suspicions that the crew on board, or individuals connected to the shipowner, have engaged in espionage or provided assistance to saboteurs or political opponents of the state;

  3. The intervention exceeds what would be considered necessary for the purpose of law enforcement; for example, if its duration is longer than usual by the standards of the legal system in question, or if the authorities resorted to violence against the master or crew in connection with the intervention;

  4. The intervention against the vessel was initiated or involved participation by the government or another overarching authority, and it cannot reasonably be explained as a legitimate act of enforcing customs, police, safety, or navigation regulations, or as the enforcement of any private law rights, having regard to how such decisions are normally made in the state in question;

  5. Circumstances of war and crisis, broadly understood, may generally support a finding that the intervention was carried out in furtherance of an overriding political objective, and ease the evidentiary threshold required to show that it is attributable to such an objective, rather than to an act of law enforcement (para 1278).

The assured had argued that the war risk insurance was triggered for the period from 12 August 2022 to 28 May 2023, as a result of the capture and subsequent detention of Heroic Idun by Equatorial Guinea and, later, by Nigeria. The assured contended that the following decisions made by the authorities of Equatorial Guinea and Nigeria should be assessed separately in respect of their motives:

  • The evasion of Heroic Idun from the Nigerian Navy on 8 August 2022;

  • The capture of Heroic Idun on 12 August 2022;

  • The further detainment of Heroic Idun in Equatorial Guinea;

  • Equatorial Guinea’s decision to rendition Heroic Idun to Nigeria, and;

  • Nigeria’s request of Heroic Idun and the detention in Nigeria.

The Tribunal analyzed all these decisions based on the factual evidence as presented by the assured and concluded that none of the decisions were based on overriding political objectives as required by Cl. 2-9 sub clause 1 letter b (para 1387). As a final step, the Tribunal tested this conclusion by way of an overall assessment, measured against the guiding factors set out above:

  1. There was little to suggest that the interventions could be explained by foreign policy considerations. It was not evidenced that the measures constituted any form of retaliatory action directed at Heroic Idun’s flag state or any other state involved in the ownership, operation, or management of the vessel, or that the vessel was used as a tool or proxy to advance any political objective beyond those connected to law enforcement. On the contrary, the submitted evidence indicated that the intervention was triggered by what the Nigerian authorities perceived as a breach of applicable regulations through entry into the AKPO Terminal area without the necessary authorisation, Heroic Idun’s failure to comply with instructions issued by the Nigerian Navy, and the transmission of what was understood to be a false piracy alert.

  2. Although representatives of a Nigerian delegation attending an International Maritime Organization meeting in London in November 2022 are on record as stating that Heroic Idun matter “bothers on National Security”, there was no evidence that this incidence posed any immediate or concrete threat to the national security interests of Nigeria. Nigeria had never claimed that the Vessel was in violation of any rules or regulations that represented a threat to the security of the Nigerian state.

  3. Even if the conduct of Nigeria under the investigation did not comply with ordinary standards of due process, the evidence presented in relation to other interventions involving vessels in Nigeria did not support a finding that the duration of the criminal investigation in this case exceeded what would ordinarily be regarded as typical within the Nigerian legal system.

  4. Although the intervention against Heroic Idun probably involved participation by the government or other higher authorities, the Tribunal found that such involvement was essentially motivated by law enforcement, that is, the enforcement of customs, policing, safety, or navigation regulations, and not undertaken in furtherance of any overriding national or international political objective.

  5. Although maritime crimes no doubt raised serious concerns for Nigeria at the time of the intervention, the situation could not be characterized as one of “war or times of crisis” that could warrant a lowering of the threshold for finding that the intervention was driven by an overriding political objective, rather than by an interest of law enforcement (para 1388).

A principal observation from this case is that the expression “for the furtherance of overriding political objectives” is not easy to interpret, either when based on the wording used, or if based on the Commentary or the previous arbitration cases. The Tribunal states that the difficulty of analyzing the individual components of the expression “interventions for the furtherance of overriding political goals typical for war or times of international crisis” in isolation “strongly suggests that the phrase should be understood as a whole in the context in which it was used in the Chemical Ruby case, namely as a flexible requirement encompassing key situations covered by war risk insurance, by contrast to Law Enforcement” (para 1256). Furthermore, the overall assessment is made based on an assumption that “it may be easier to determine what is not covered by Clause 2-9, sub-clause 1(b) than setting out what is covered” (para 1259) and provides 5 elements for the evaluation that may give a “flexible tool” for the assessment.

This may provide “flexibility” for the insurer, but it is difficult for the assured to deduce all these elements from the expression “overriding political objectives”. The approach therefore appears contrary to considerations of legal security and predictability.

From the perspective of legal security and predictability it is also unfortunate that an understanding of the clause needs to combine the wording with the Commentary’s reference to “war or times of crisis” to map out the real meaning of the clause. The expression of “war” creates some confusion in terms of the relationship between Cl. 2-9 sub-clause 1 letter a and b, and the expression “times of crises” is rather vague and not further developed in the Commentary. In particular, it is unclear when a dysfunctional state not operating according to Nordic legal standards crosses the border to be in a state of “crisis”.

It is also unfortunate that the clause apparently raises considerable problems regarding evidence, in particular that it cannot be expected that the foreign state involved will provide any help in producing relevant evidence. Even though the Tribunal in the Heroic Idun case had access to considerable evidence, this will not always be the case.

Another observation is that even if the capture of Heroic Idun started with a breach of trade legislation, and the Tribunal found no evidence that the decisions made by the involved states in the chain of events after the capture were made for the furtherance of an overriding political objective, the chain of events illustrates that what starts as unlawful conduct may lead to situations appearing with an extraordinary character outside the scope of marine perils normally encountered in marine trading. Although it may be argued that such delay is to be expected from dysfunctional states, and the detainment in this case could also be explained by the vessel’s behavior after the breach by fleeing to another jurisdiction and raise a false piracy alarm, the detainment from a general perspective appears to be out of proportion compared to the initial breach. This raises the question of the possibility of loss of hire cover under the marine risk insurance for detainment in cases where the delay is caused by such breaches, presuming the breach is outside the scope of the NP Chapter 3.

3.3.4 Causation

NP Cl. 2-9 sub-clause 1 letter b covers the defined interventions only if the intervention “is made for the furtherance” of an overriding political objective. As mentioned above in 3.3.1, the expression “is made for the furtherance” contains a requirement for causation.

According to the wording and the conditional sine qua non principle, the intervention is caused by the overriding political objective if the overriding political objective was a necessary condition for the intervention, i.e. in the absence of such objective there would be no intervention.(12) Wilhelmsen and Bull p. 116. If it is established that there was no overriding political objective for the intervention, we are outside the scope of Cl. 2-9 sub-clause 1 letter b. It is, however, possible that there is a combination of objectives that qualifies as necessary conditions, for instance where a sanction against a breach of trade legislation is combined with overriding political objectives. This situation is regulated by NP Cl. 2-14, which reads:

If the loss has been caused by a combination of marine perils, cf. § 2-8, and war perils, cf. § 2-9, the whole loss shall be deemed to have been caused by the class of perils which was the dominant cause. If neither of the classes of perils is considered dominant, both shall be deemed to have had equal influence on the occurrence and extent of the loss.

The starting point in Cl. 2-14 is that the dominant-cause rule shall apply. If neither of the classes of perils is considered dominant, both shall be deemed to have had equal influence on the occurrence and extent of loss. The natural understanding of the expression “dominant cause” is that a relatively material predominance is required, in order to characterize a peril as the “dominant cause”.(13) Wilhelmsen and Bull pp. 124-125. This is further elaborated upon in the Commentary to the provision: “It is not sufficient to reach the conclusion – perhaps under doubt – that one peril is slightly more dominant than the other; it is precisely the arbitrary choice between two causes which carry approximately the same weight that should be avoided. On the other hand, a 60/40 apportionment should probably constitute the upper limit for an equal distribution. If we get close to 66%, one of the groups of perils is after all considered twice as «heavy» as the other ".(14) Commentary 2023 p. 86 to Cl. 2-14.

The “combination of perils” here consists of a combination of an overall political objective and other objectives for detention, for instance breaches of different kinds of legislation that provide a legal basis for an intervention against the vessel. The dual objectives can interact in different ways. One example is ND 2029 p. 6 NA Team Tango:

The vessel was detained for lacking the necessary permit to import a cargo of urea fertiliser, which could lawfully be imported only by two designated Nigerian companies. It was undisputed that one motivation behind the restriction was to prevent the terrorist group Boko Haram from obtaining urea for use in bombmaking. However, in assessing whether the detention was taken in furtherance of an overriding political objective, the Tribunal held that, although the underlying reason for the restriction reflected such an objective, it was too remote to be regarded as the decisive cause of the detention. Rather, the arbitral tribunal found that the primary motivation of the intervention was the breach of import regulations, and that detention was a typical and foreseeable consequence of such a breach, regardless of any broader political motive.

In this case, the direct cause of the arrest was breach of trading legislation, but the trading legislation was partly based on overall political objectives. The Tribunal does not really discuss the issue, but the assessment is in conformity with previous practice on the combination of marine and war peril. The guideline based on these cases is that the direct or immediate cause is the dominant cause unless a previous cause, creates a substantial risk of the direct cause occurring.(15) Wilhelmsen and Bull p. 126, Wilhelmsen (2022), para 9.64-9.68.

The claimant in the Heroic Idun case submitted that even if the intervention started as a matter of law enforcement, it could, at some point, acquire a political character within the meaning of NP Cl. 2-9, sub-clause 1 letter b. The Tribunal remarked that this could be the case if the intervention resulted in international criticism or the threat of sanctions by the flag state, and the government then intervenes to prolong the detention. In such a case, the intervention may be covered entirely under the war risk insurance from the point at which the political motive becomes the dominant cause of the intervention (para 1270). However, the Tribunal did not find this to be the case.

It is correct, as remarked by the Tribunal, that if an intervening governmental act to obtain overriding political objectives constitutes the dominant cause of a prolonged delay, the intervention will change from being a marine casualty to becoming a war casualty. However, in the Heroic Idun case, a casualty in the form of an intervention covered by insurance against marine perils had occurred. If a potential war peril had interacted with this casualty at a later stage, the starting point, according to the Commentary, would be that the casualty shall carry the most weight.(16) Commentary 2023 p. 86 cf. p. 84 and ND 1941 p. 378 NA Veslekari and ND 1977 p. 38 NSC Vestfold I. The main rule is therefore that if the marine casualty interacts with a new intervening war risk cause, the casualty is assessed as being the dominant cause.